Kidney

Evaluate suspected renal stenosis

Specific Anatomic Region

Kidney

Application

Evaluate suspected renal artery stenosis

Author

Urban et al.

Reference Source

Scanner Used

Siemens Somatom Plus 4

Injection Rate

3cc/sec

Contrast Volume and Type

100-120cc Omnipaque 350

Area Scanned

Through regions of renal arteries

Scan Delay (2 delays if dual spiral)

25-30 sec and 3 minutes

Length of Spiral (time)

20-30sec each

Slice Thickness

2-3mm

Table Speed/Pitch

4-6mm/sec

Reconstruction Interval

1mm

3D Technique Used

Volume rendering & MIP

Comment:

• Non contrast CTs are first obtained to localize the renal arteries for the CT angiogram. This allows a smaller scan volume which is critical with SDCT and the use of 1-2mm collimation.
• 3D with VRT is accurate to quantify stenosis.